Here in Hawaii we have alot of pigs that use the same hollowed out tree or the same cave and will lure the dogs into it because they know they have the advantage of their back end is covered and the dogs have to take it on head to head. Usually in this scenerio the dogs will take turns picking shots until we get there with the gun. Here is a video of a nice boar that had claimed many victims that had given his cave a try. My cousin had tried this Laho'ole (Barr) on a few occasions and came home with a few cuts and hurt egos each time so he asked my uncle and a couple of his friends to join him on this try.
http://www.youtube.com/watch?v=0KARrBHXalo